Benidipine Impurity 21 CAS 196930-14-0
| CAS No. | 196930-14-0 |
| Molecular Formula | C35H38N3O6 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Benidipine Impurity 21.
Benidipine Impurity 21 (CAS 196930-14-0) is a certified pharmaceutical impurity reference standard with the molecular formula C35H38N3O6Br and a molecular weight of 676.61 g/mol.
Benidipine Impurity 21 (C35H38N3O6Br) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C35H38N3O6 Br |
| Molecular Weight | 676.61 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2013 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
Related Benidipine Standards
- Benidipine Impurity 63 (CAS 105589-45-5)
- Benidipine Impurity 15 HCl (CAS 105589-45-5(free base))
- Benidipine (CAS 105979-17-7)
- Benidipine Impurity 67 (CAS 105979-18-8)
- Benidipine Impurity N1 (CAS 118431-03-1)
- Benidipine Impurity 11 (CAS 1185304-22-6)
- Benidipine Impurity 28(Mixture of Diastereomers) (CAS 121138-43-0)
- rac Benidipine-d5 Hydrochloride (CAS 1329633-88-6)
Recommended Standards
- Lodoxamide Impurity N44 (CAS 14994-02-6)
- Alprazolam impurity 25 (CAS CATO-C4X-146025)
- Azacitidine Impurity 13 (CAS CATO-C4X-138813)
- N-(4-Acetylphenyl)-3-(p-tolylthio)propanamide (CAS 895466-66-7)
- 2-(Cyclopropylamino)-1-phenylethanone (CAS 18381-60-7)
- Baloxavir Impurity C14 (CAS 2136287-80-2)
- Azido-PEG23-amine (CAS 2172677-19-7)
- (3-Chloro-4-(pentyloxy)phenyl)(methyl)sulfane (CAS 1443350-03-5)
- (2S,2'S,3S,3'S)-DI-Me-BABIBOP (CAS 2207601-10-1)
- Palmitoyl Tripeptide -5 · 2 TFA (CAS 623172-56-5)
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